Feed-water heater.



F. McHUGH.

FEED WATER HEATER.

APPLICATION FILED MAYIS. 1914.

Patented Aug IN VEN TOR WITNESSES @kgazm ATTORNEY COLUMBIA PLANOGRAPH CO" WASHINGTON. D4 C.

FI McHUGH.

FEED WATER HEATER.

APPLICATION FILED MAY 15. 1914.

Patented Aug. 3, 1915.

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INVENTOR ATTORNEY COLUMBIA PLANOGRAPH CO-.WASH|NOTON. D. c.

FRANK MoHUG'i-I, OF PHILADELPHIA, PENNSYLVANIA.

FEED-WATER HEATER.

mesons.

Specification of Letters Patent.

Application filed May 15, 1914 Serial No. 838,763.

To all whom it may concern Be it known that I, FRANK MOHUGH, a citizen of the United States, residing at 2216 Tulip street, city of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a certain new and useful Feedater Heater, of which the following is a specification.

he purpose of my invention is to provide compartments for circulation of feed water, steam and cooling water respectively, which shall be characterized by flat dividing walls or surfaces, which shall all be supported upon a common stiffening plate, shall provide return passages on opposite sides of the stiifening plate for each of the circulations provided and shall'inclose the circulation systems successively so that the water to be heated shall lie next to the plate on each side, be inclos ed by compartments for circulation of preferably exhaust steam and the latter shall in turn be 1nclosed within compartments within which condensing water'is circulated.

My invention relates to devices which maybe used for boiler feed heating or separate steam condensation at will and may utilize both the boiler feed water and a separate supply of condensing water at the same time to take the lieat out of-exhaust steam.

A further purpose of my inventionis to arrange separate units having the characteristics noted in groups with their flat sides together and communicating unit with unit to successively increase the temperature of the feed water being heated and condense a further quantity of steam in the successive units.

A further purpose of my invention is to connect flat sided return compartments in different units forming part of a system by pipes passing through intermediate inclosing return-circuit flat-sided compartments, so as to avoid outside connections and econ omize in space and in cost.

Further purposes of my invention will appear in the specification and claims hereto.

I have preferred to illustrate my invention by one form thereof which has proved to be simple, effective and relatively inexpensive and which at the same time well illustrates the principles of my invention.

Figure 1 is a top plan view, in partial section, of the preferred form of my invention. Fig. 2 is an end elevation of a series of units, such as are seen in Fig. 1, a plate being removed throughout part of the surface. Fig. 3 is a vertical section taken upon line 33 of Fig. 2. Fig. l is an enlarged section of portion of Fig. 3. Fig. 5 is a side elevation of a portion of the structure of Fig. 41. Fig. 6 is a broken section of a modification.

Similar numerals of reference indicate like parts.

' Considering first a single unit of my combiried feed water'heater and condenser z-I mount the entire'unit upon acentral stiffening plate 1 and place'the' respective parts in'pairs upon opposite sides ofthis plate. Thus, the feed water heating "compartment is formed by a pair of oppositely placed mating sections 2, one upon each side of the plate 1 and communicating through passages 3, which are formed within this central plate. Theplates forming the sections 2-are riveted to the plate 1 at 4: and the open" sides'of the sections are closed by a side plate 5 riveted to the sections and bolted to the central plate at 6, 7 and 8. The sectionsaread'apted to lie with the central stiffening plate in horizontal position'and are supplied with water through pipes 9 which, asshown maybe flangedand welded'] to the platesat 10. The circulation through the -water compartments 11, 11 thus formed is' from the bottom upwardly. Surrounding this pair of oppositely placed communicating compartments,11, I place a pair of larger mating half sections 12, lying upon opposite sides of the stifiening plate 1 and riveted to it at 13, and bolted to the end plate 5 at 1 1, 15. I thus form a pair ofcoinmunicating compartments 16 for exhaust steam"which completely surround the compartments 11, 11, except at the end where contact is made with plate 5. The opposite compartments 16, 16 communicate through the supporting or stiffeningplate 1 by means of apertures in the plate, here shown as arranged in two rows 17 and 18. I provide for admission of steam to the compartments 16, 16" by pipes 19 which may be flanged and welded to the half section 12 at 17 if desired and which if the half sections 12 be outside sections are preferably wholly independent of the pipes 9 through which feed water is supplied to the compartments 11, 11'. If, on the other hand, the sections be not outside sections, I

Patented Aug. 3, 1915.

place each pipe 19 about a pipe 9, so as to surround it and afford passage for both steam and water within the area represented by the section of the pipe 19. In this case also the pipes 19 may be welded to the sections.

Where it is desired to utilize my invention for nothing more than theheating of feed water, the individual sections or units are complete with these two pairs of compartments, the inner for feed water at 11, 11' and the outer 16, 16 for steam by which the feed water is to be heated. However, where it is desired to provide for separate condensation of steam within the compartments 16, 16, either at intervals, permissibly while feed water is being heated in thecompartments 11, 11 or continuously, I add an additional pair of compartments 21, 21, whose construction I will now proceed to describe.

In view of my explanation of the manner of supporting the units where they comprise three separate pairs of compartments and or" providing connection between compartments of like character as they are assembled, I have regarded it as unnecessary to illustrate an assemblage of a series of units having two pairs of compartments each, showing the more diflicult form only, in the assemblage of units of three pairs of compartments each, as, for example, in Figs. 2 and 3.

Where the feed water heaters are to be used on shipboard and conservation of boiler water is considerably more of an object than the resultant loss of heat, and in other localities where it may be desirable to have one apparatus serve the combined functions of feed water heating and condensation by separate water, either at the same time or at different times, I supply the additional compartments 21, 21, surrounding the compartments 16, 16 in the same manner that the latter surround the compartments 11, 11. These compartments 21, 21 are formed by a pair of mating fiatsided half sections 22, placed upon opposite sides of the stiffening and supporting plate 1 and riveted to it as at 23, providing communication between the two compartments by apertures through the supporting plate, here shown as arranged in two rows 24 and 25.

I provide an inlet to the outside section, as at 26, and connect each compartment 21 or 21 with its adjoining compartment 21 or 21. in a series of units by any suitable fastening 27 about aperture 28. I also provide an aperture in the walls of the adjoining half sections or half shells 22 of different units for passage of the pipes 9 and 19 and substantially duplicate the construction within one unit by which the pipes 9 and- 19 are connected to supply the compartments 11, 11 and 16, 16 by the construc be seen from the illustration in Flg. 3.

Since both ends of these pipes cannot conveniently be welded in place I pass one end through the half section with which it is to be connected and supply it with a shoulder, shown at 29 upon pipe 9, and at 29 on pipe 19, using a nut 30 or 30 to retain it in place. I use also a gasket 31 or 31 to make the joint tighter and use the same arrangement of shoulder or flange, gasket and nut at intermediate points where each pipe is to be sealed against the wall of a section through which it passes.

The half sections22 are bolted to the plate 5 at 32 and 33, so as to close the end of this compartment also, providing a unit of three compartments in which steam is ordinarily introduced within the central compartment, boiler feed water within the inner compartment and cooling water, such as salt water, for example, in the outer compartment.

I plan to arrange as many of my units together as may be required or desired for the temperature changes or condensation contemplated, placing them one on top of another as seen in Figs. 2 and 3, with their stiflening plates parallel and horizontal and with a common plate 5 preferably for all of the units combined. Upon the opposite end from the end plate 5, I unite the units by any suitable means, here shown as bolts 31 and spacing pipes 35, passing the bolts through the respective stiffening plates and pipes alternately and holding the stifliening plates together rigidly with the spacing indicated.

I contemplate circulating the feed water in the inner compartments from the bottom upwardly, in order that the circulation may be assisted by the normal tendency of heated water to rise and that the heating effect may be further improved by contact with the hottest steam just before leaving the feed water heater, as I pass the steam through the sections from the top downwardly. I also contemplate passing the condensing water through the outer compartments from the bottom upwardly, with a view to requiring as little force to pass it through as possible.

Because the form or" connection of the inlet and outlet pipes by nuts and gaskets shown in Figs. 3 and 1 will involve an excessive amount of repair under some circumstances, and will prove less permanent than expanded terminals, I have shown in Fig. 6 the way in which these connections appear when expanded in place. It will be obvious the method of fastening these tubes to the plates does not constitute a part of my invention.

.lhe end plates for the difierent sections may be either separate, as shown at the left of Fig. 2 or common to a number of sections as shown in the right hand part of this figure.

Having what I claim as new Letters Patent is 1. In a device of the character stated a feed water heater and condenser unit comprising a centrally disposed stiffening plate, a pair of mating fiatsided half casings secured to opposite sides of the plate forming compartments communicating through an opening in the plate near one end thereof, a pair of mating, flat-sided half casings secured to the plate to inclose the first half casings and form compartments also communicating through an opening in the plate, in combination with feed water connections to the inside half casings passing through openings in the outside half casings.

2. In a device of the character stated a central stiffening plate apertured for the passage of fluid therethrough, in combination with a plurality of successively inclosing, mating, fiat-sided half sections forming successively inclosing compartments in pairs on opposite sides of the-plate and communicating through the aperture in it.

8. In a device of the character stated a central stifiening plate apertured for the passage of fluid therethrough, in combination with a plurality of successively inclosing, mating fiat-sided half sections forming successively inclosing compartments in pairs on opposite sides of the plate and communieating through openings in it and fluid connections to the said compartments, the connections to the inner compartments passing through openings in the'casings which form the outer compartments.

l. In a device of the character stated a central stiffening plate, a plurality of pairs of mating, fiat-sided half casings placed with the half casings of each pair on opposite sides of the plate, and the compartments thus formed communicating through openings in the plate, the successive compartments being nested and forming a unit, in combination with a similar unit having an outer fiat sided half casing adjoining an outer, fiat-sided half casing of the first unit.

5. In a, device of the character stated a central stiffening plate, a plurality of nested pairs of open-ended, fiat-sided half casings attached to the plate, with the half casings of each pair on opposite sides thereof and thus described my invention, and desire to secure by the compartments thus formed communicat-- ing through openings in the plate, and a common closing plate for the ends of all of the casings.

6. In a device of the character stated a central stiffening plate, a plurality of nested fiat-sided half casings attached to the plate, with the half casings of each pair on opposite sides thereof and the compartment thus formed communicating through openings in the plate, a com mon closing plate for. the ends of all of the casings, and inlets for the inner nested compartments passing through openings in the half casings forming the outer compartments.

7. In a device of the character stated a central stiffening plate, a plurality of nested pairs of open-ended, flat-sided half casings attached to the plate, with the half casings of each pair on opposite sides thereof and the compartments thus formed communieating through openings in the plate, a common closing plate for the ends of all of the casings, and inlets for the several compartments, the inlet for one compartment being co-aXial with the inlet for -an adjoining compartment.

8. In a device of the character stated a central stifiening plate, a plurality of nested pairs of open-ended, fiat-sided half casings attached to the plate, with the half casings of each pair on opposite sides thereof and the compartments thus formed communicating through openings in the plate, and a common closing plate for the ends of all of the casings, forming a unit, in combination with a corresponding unit having the flat sides of the outer casings forming the outer compartments of the two units in substantial contact and the end plates of the adjoining units in line.

9. In a device of the character stated a feed water heater and condenser unit comprising a centrally disposed stiffening plate,

a pair of mating half casings secured to opposite sides of the plate forming compartments communicating through an opening in the plate near one end thereof, a pair of mating half casings secured to the plate to inclose the first half casings and form compartments also communicating through an opening in the plate, in combination with feed water connections to the inside half casings.

10. In a device of the character stated, a central stiffening plate apertured for the passage of fluid therethrough, in combination with a plurality of successively inclosing, mating half sections forming successively inclosing compartments in pairs on opposite sides of the plate and communicating through the apertures in it.

11. In a device of the character stated, a central stifiening plate, a plurality of pairs of mating half casings placed with'the half casings of each pair on opposite sides of the plate, and the compartments thus formed communicating through openings in the plate, the successive compartments being nested and forming a unit, in combination pairs of open-ended,

with a similar unit having an outer half casing adjoining an outer half casing of the first unit.

12. In a device of the character stated, a central plate having openings at different distances from one end, in combination With tWo pairs of half casings located on opposite sides of said plate, the one pair secured to the plate between the openings and the copies of this patent may be obtained for five cents each, by addressing the Washington, I). 0.

other pair surrounding the first pair and in- 10 cluding the second opening and means for fluid connection between the half casings of each'of said pairs. 1 V

FRANK MoI-IUGH.

Witnesses:

ARTHUR R. B. Fox, WM. STEELL JAoKsoN. V

Commissioner of Patents, 

